Improvement in apparatus for treating refuse from slaughter-houses for



ZSheets-Sheetl. J. BONFIELD.

APPARATUS FOR TREATING REFUSE FROM SLAUGHTER HOUSES FOR mmmzme PURPOSES. No.181,4OZ. Patented Aug.22,1876.

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I .27 2/012 hue J. BONFIELD. APPARATUS FOR TREATING REFUSE FROM SLAUGHTER HOUSES FOR FERTILIZING PURPOSES.

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N. PETERS, PHOTO-LITMOGRAPHER, WASHINGTON. D 04 I JOHN BONFIELD, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN APPARATUS FOR TREATING REFUSE FROM SLAUGHTER-HOUSES FOR FERTlLlZlNG PURPOSES.

Specification forming part of Letters Patent N 0. 181,402, dated August 22, 1876; application filed March 9, 1876.

To all whom it may concern .H-is the receiving-chamber, which is usually Be it known that I, JOHN BONFIELD, of located at a distance of from thirty to sixty Chicago, in the county of Cook and State of feet from the furnace. This receiving-cham- Illinois, have invented a new and Improved her is provided with a series of partitions, J, Apparatus for Utilizing Refuse Matter from J, and K, forming separate compartments L, Slaughter Houses for fertilizing purposes .M, N, and O, as shown in Fig. 4. Partitions and I do hereby declare the following to be a J and J are each provided at the center with full,clear, and exact description thereof, which I a screen, m, as shown in Fig. 6. The meshes will enable others skilled in the art to which i of the-fabric constituting these screens areof it appertains to make and use the same, refdifferent sizes, the meshes of the screen of erence being had to the accompanying drawpartition J being coarser than those of partiings, forming part of this specification, in tion J. G is a metal pipe, permanently atwhich tached to the fan-case B, and communicating Figure 1 is a general plan or top view of a with compartment L of the receiving-chamber fertilizing apparatus embodying my said in- H through the main or outer wall, as shown Vention. Fig. 2 is a side elevation of the dryin Fig. 4. This pipe passes through an eloning-cylinder and parts employed in operating gated opening in the wall, and is secured in the same, a portion of the cylinder being 5 positionby means ofasliding plate, g, through broken away, showing the interior of the which it passes. This plate covers the opensame; and Fig. 3 is a cross-section of the ing in the'wall, and is so arranged as to adsame. Fig. 4 is a sectional plan of the remit of being moved in the direction of its ceiving-chamber. Fig. 5 is a vertical translength, the object of which is to change the verse section of the receiving-chamber,taken position of the inner end of the pipe, when on the line y y, drawn across Fig. 4 and Fig. desired.

' 6 is a vertical longitudinal section of a por- Permanently attached to pipe 0, and comtion of the same, taken on the line a: (1?,dI'ttWIl municating with the interior of the same near through Fig. 4. the receiving-chamber, is a hopper, P, (shown Similar letters of reference indicate like in Fig. 1,) which receives the material from parts in the several figures of the drawing. cylinder G through trough c. F is an open- 'My invention relates to that class of appaended cylinder, journaled at its ends upon ratus employed in utilizing the refuse suband around short stationary cylinders G G, stances from slaughterhouses for fertilizing permanently secured to a frame-work, F, and purposes, and its object is to facilitate the is so arranged as to admit of a free and easy drying and separating of the same. It conrotary movement. This, cylinder F is also sists in the peculiar construction and. operasupported, at a point near its ends, upon antition of an apparatus for that purpose, which friction wheels a, journaled in suitable boxes will be more fully understood by the following i secured to frame F. E is a horizontalfpipe, description and claims. one end of which communicates with the inte- In the drawing, A represents the furnace rior of pipe 0 at a point near the fan, and at proper, which is constructed with an outerv the other end with the interior of cylinder F and inner wall, forming an air-chambersurthrough the end of cylinder G, as shown in rounding the sides, end, and top of the inner Figs. 1 and 2. Mounted upon the upper surwall. This chamber is provided with a suitaface of cylinder G is a hopper, d, communicatble opening for the admission of air to be ing with the interior of the same. Hinged to heated. B is an ordinary exhaust-fan, comthis hopper, and extending over the entire municating with the air-chamber of the furarea of the same, is a bottom, d, to which are nace through pipe 0. This fan is rotated by attached levers c c, passing through the wall means of a belt passing around pulley D on of the hopper, and upon which are mounted shaft E of the fan, and communicating with .adjustable weightsc e,.a rranged to admit of any suitable motor. being moved toward or from the hopper. The

arrangement of this bottom is such as to tip downward under the weight of the material in the hopper, so as to allow it to pass into the cylinder, and to move back to its normal position by the gravity of the weights when the material has passed off. The lower surface of cylinder G is provided with an open ing, 0, communicating with a conductingtrough, 0, extending from the cylinder to hop per P of pipe (3.

The cylinder F is arranged on an incline toward the receiving-chamber, and is provided internally with a series of radial flanges, f, as shown in Figs. 2 and 3, the object of which is to agitate the material in the cylinder, and to cause it to move through the latter toward the receiving-chamber, where it is discharged through opening 0 into trough 0, through which it passes into hopper P and pipe 0'.

P is an escape-pipe, communicating with the interior of cylinder G, and extending through the roof of the building within which the apparatus is located, by which means the foul gases generated in the cylinder are allowed to escape.

M is a gear mounted upon cylinder F, and engaging with a corresponding gear, N, on a horizontal shaft, communicating with any suitable motor, by which a rotary motion is imparted to the cylinder.

The upper portion of partition K is provided with a series of ventilating-openings, h, through which the foul gases may escape into compartment 0. These openings are covered with sliding plates h, which are so arranged as to open or close the openings, as may be desired.-

The outer or main wall is also provided with openings t t, communicating with vertical flues a or, (shown in Fig. 4,) through which the foul gases escape from compartment 0. These openings are alsocovered with sliding plates 0 0, arranged to open or close the openings, as may be desired. The end of pipe G, projecting into the compartment L, is made fun-,

nel-shaped, as shown in Fig. 4;, the object of which is to allow the fertilizing material to expand as it passes from said pipe, and thus spread more evenly over the surface of the adjacentscreen J. The lower portion of partition K is provided with a series of openings, S, through which the fertilizing material is removed from the separate compartments L, M,

and N.

With the ordinary apparatus employed in utilizing animal substance for fertilizing purposes, and the process by which it is worked, the raw material, such as the refuse matter from slaughter-houses and other similar substance, is first dried in heated cylinders until it becomes a fine pulpy mass, when it is removed from the cylinder and allowed to dry in the open air. This process of drying leaves the mass more or less solid; consequently it becomes necessary to pulverize the same before it is ready for use. My invention obviates this latter difficulty, leaving the mass in a powdered state when dry.

The operation of my invention is as follows: A sufiicient amount of fuel is introduced into the fire-box of the furnace and ignited, when the products of combustion pass into the chamber of the furnace, heating the air. in said chamber, and, when properly heated, motion is imported to the fan and to cylinder F, the fan exhausting the heated air from the chamber and forcing it into the receiving-chamber.

and cylinder F through pipes O and E. The

pulpy mass, as it is taken from the ordinary drying-cylinder previously mentioned, is then introduced into cylinder 1 through hopper (Z, and in contact with the current of heated air passing through the cylinder, and by the rotation of the latter the mass is kept in motion, causing it to pass through the cylinder when it becomes thoroughly dry, and in a powdered state, when it is discharged from the cylinder through opening 0 into trough a, through which it passes into pipe 0, and in contact with the current of air passing through said pipe, by which means itis forced through the pipe into the receiving-chamber and.

2. In combination with the hot-blast pipe G, a series of upright screens, m m, located in the receiving-chamber H, and operating in the manner and for the purpose specified.

The above specification of my invention signed by me this 26th day of October, 1875.

JOHN BONFIELD,

Witnesses:

J. T. WHIPPLE, N. H. SHERBURNE. 

